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Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress

An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that a...

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Autores principales: Madigan, Andrew P., Egidi, Eleonora, Bedon, Frank, Franks, Ashley E., Plummer, Kim M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901394/
https://www.ncbi.nlm.nih.gov/pubmed/31849848
http://dx.doi.org/10.3389/fmicb.2019.02616
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author Madigan, Andrew P.
Egidi, Eleonora
Bedon, Frank
Franks, Ashley E.
Plummer, Kim M.
author_facet Madigan, Andrew P.
Egidi, Eleonora
Bedon, Frank
Franks, Ashley E.
Plummer, Kim M.
author_sort Madigan, Andrew P.
collection PubMed
description An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that affect yield and crop quality. However, there are no reports regarding the effects of melatonin on soil microbial communities under abiotic stress, despite the importance of microbes for plant root health and function. Three agricultural soils associated with different land usage histories (pasture, canola or wheat) were placed under abiotic stress by cadmium (100 or 280 mg kg(−1) soil) or salt (4 or 7 g kg(−1) soil) and treated with melatonin (0.2 and 4 mg kg(−1) soil). Automated Ribosomal Intergenic Spacer Analysis (ARISA) was used to generate Operational Taxonomic Units (OTU) for microbial community analysis in each soil. Significant differences in richness (α diversity) and community structures (β diversity) were observed between bacterial and fungal assemblages across all three soils, demonstrating the effect of melatonin on soil microbial communities under abiotic stress. The analysis also indicated that the microbial response to melatonin is governed by the type of soil and history. The effects of melatonin on soil microbes need to be regarded in potential future agricultural applications.
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spelling pubmed-69013942019-12-17 Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress Madigan, Andrew P. Egidi, Eleonora Bedon, Frank Franks, Ashley E. Plummer, Kim M. Front Microbiol Microbiology An extensive body of evidence from the last decade has indicated that melatonin enhances plant resistance to a range of biotic and abiotic stressors. This has led to an interest in the application of melatonin in agriculture to reduce negative physiological effects from environmental stresses that affect yield and crop quality. However, there are no reports regarding the effects of melatonin on soil microbial communities under abiotic stress, despite the importance of microbes for plant root health and function. Three agricultural soils associated with different land usage histories (pasture, canola or wheat) were placed under abiotic stress by cadmium (100 or 280 mg kg(−1) soil) or salt (4 or 7 g kg(−1) soil) and treated with melatonin (0.2 and 4 mg kg(−1) soil). Automated Ribosomal Intergenic Spacer Analysis (ARISA) was used to generate Operational Taxonomic Units (OTU) for microbial community analysis in each soil. Significant differences in richness (α diversity) and community structures (β diversity) were observed between bacterial and fungal assemblages across all three soils, demonstrating the effect of melatonin on soil microbial communities under abiotic stress. The analysis also indicated that the microbial response to melatonin is governed by the type of soil and history. The effects of melatonin on soil microbes need to be regarded in potential future agricultural applications. Frontiers Media S.A. 2019-12-03 /pmc/articles/PMC6901394/ /pubmed/31849848 http://dx.doi.org/10.3389/fmicb.2019.02616 Text en Copyright © 2019 Madigan, Egidi, Bedon, Franks and Plummer. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Madigan, Andrew P.
Egidi, Eleonora
Bedon, Frank
Franks, Ashley E.
Plummer, Kim M.
Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title_full Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title_fullStr Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title_full_unstemmed Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title_short Bacterial and Fungal Communities Are Differentially Modified by Melatonin in Agricultural Soils Under Abiotic Stress
title_sort bacterial and fungal communities are differentially modified by melatonin in agricultural soils under abiotic stress
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901394/
https://www.ncbi.nlm.nih.gov/pubmed/31849848
http://dx.doi.org/10.3389/fmicb.2019.02616
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